Abstract

A simple installer that wraps the kubeadm utility to install a single-node Kubernetes cluster on CentOS or Ubuntu.

Mostly useful for POC and demos where using minikube isn't possible.

Prerequisites

Supported OS: CentOS 7.x, Ubuntu 16.x 17.x

Docker: v1.10, 1.11, 1.12 (recommended)

Execution

Just run the installer script and wait a few minutes until Kubernetes control plane components will start properly.

curl -L https://github.com/codefresh-io/k8s-single-node-installer/archive/master.tar.gz | tar xvz
cd k8s-single-node-installer-master
sudo chmod +x installer
sudo ./installer

You can check the progress with docker ps and journal -fu kubelet commands.

Development

For testing and development purposes, first run the relevant Vagrant machine:

export VAGRANT_VAGRANTFILE=vagrant/Vagrantfile.ubuntu16
vagrant up

This will start a machine that match one of the supported OS and install a Docker daemon into it.

When vagrant will finish provisioning the machine, ssh into it with vagrant ssh and run:

sudo ./installer
export KUBECONFIG=/etc/kubernetes/admin.conf 
sudo -E ./cf-helm

IMPORTANT make sure that you have filled in the secrets in values.yml file before running the cf-helm command.